From 092b17870bf9b683c05350deb0f2307683079bea Mon Sep 17 00:00:00 2001
From: rushiiMachine <33725716+rushiiMachine@users.noreply.github.com>
Date: Sun, 24 Mar 2024 18:53:11 -0700
Subject: [PATCH] wip: setup c# rust ffi

---
 .gitignore                                    |  1 +
 Osu.Patcher.Hook/Hook.cs                      |  2 +
 Osu.Patcher.Hook/Osu.Patcher.Hook.csproj      |  3 +
 .../Osu.Patcher.Injector.csproj               |  2 +-
 Osu.Performance.ROsu/.cargo/config.toml       |  3 +
 Osu.Performance.ROsu/Cargo.lock               | 16 ++++++
 Osu.Performance.ROsu/Cargo.toml               | 10 ++++
 .../Osu.Performance.ROsu.csproj               | 32 +++++++++++
 Osu.Performance.ROsu/Test.cs                  | 11 ++++
 Osu.Performance.ROsu/src/lib.rs               | 56 +++++++++++++++++++
 Osu.Performance/Osu.Performance.csproj        | 33 +++++++++++
 osu-patcher.sln                               | 12 ++++
 12 files changed, 180 insertions(+), 1 deletion(-)
 create mode 100644 Osu.Performance.ROsu/.cargo/config.toml
 create mode 100644 Osu.Performance.ROsu/Cargo.lock
 create mode 100644 Osu.Performance.ROsu/Cargo.toml
 create mode 100644 Osu.Performance.ROsu/Osu.Performance.ROsu.csproj
 create mode 100644 Osu.Performance.ROsu/Test.cs
 create mode 100644 Osu.Performance.ROsu/src/lib.rs
 create mode 100644 Osu.Performance/Osu.Performance.csproj

diff --git a/.gitignore b/.gitignore
index b190414..604086d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 bin/
 obj/
+target/
 /packages/
 /_ReSharper.Caches/
 *.idea
diff --git a/Osu.Patcher.Hook/Hook.cs b/Osu.Patcher.Hook/Hook.cs
index 37cfc11..8439fa4 100644
--- a/Osu.Patcher.Hook/Hook.cs
+++ b/Osu.Patcher.Hook/Hook.cs
@@ -2,6 +2,7 @@
 using System.Diagnostics;
 using HarmonyLib;
 using JetBrains.Annotations;
+using Osu.Performance.ROsu;
 using Osu.Utils;
 
 namespace Osu.Patcher.Hook;
@@ -22,6 +23,7 @@ public static int Initialize(string _)
 
         try
         {
+            Console.WriteLine(Test.test());
             _harmony = new Harmony("osu!patcher");
             InitializePatches(_harmony);
 
diff --git a/Osu.Patcher.Hook/Osu.Patcher.Hook.csproj b/Osu.Patcher.Hook/Osu.Patcher.Hook.csproj
index 6e36d73..c3cae83 100644
--- a/Osu.Patcher.Hook/Osu.Patcher.Hook.csproj
+++ b/Osu.Patcher.Hook/Osu.Patcher.Hook.csproj
@@ -26,6 +26,9 @@
 
     <ItemGroup>
         <PackageReference Include="JetBrains.Annotations" Version="2023.3.0" PrivateAssets="all"/>
+        <ProjectReference Include="../Osu.Performance/Osu.Performance.csproj">
+            <SetTargetFramework>TargetFramework=net452</SetTargetFramework>
+        </ProjectReference>
         <ProjectReference Include="../Osu.Stubs/Osu.Stubs.csproj">
             <SetTargetFramework>TargetFramework=net452</SetTargetFramework>
         </ProjectReference>
diff --git a/Osu.Patcher.Injector/Osu.Patcher.Injector.csproj b/Osu.Patcher.Injector/Osu.Patcher.Injector.csproj
index 965c7e6..c9a152a 100644
--- a/Osu.Patcher.Injector/Osu.Patcher.Injector.csproj
+++ b/Osu.Patcher.Injector/Osu.Patcher.Injector.csproj
@@ -6,7 +6,7 @@
         <ApplicationVersion>1.0.0</ApplicationVersion>
         <AssemblyName>osu!.patcher</AssemblyName>
         <RootNamespace>Osu.Patcher.Injector</RootNamespace>
-        <TargetFramework>net6.0</TargetFramework>
+        <TargetFramework>net8.0</TargetFramework>
         <LangVersion>12</LangVersion>
         <Nullable>enable</Nullable>
         <NoWarn>$(NoWarn);NU1702</NoWarn> <!-- ProjectReferences used here are expected to not match target framework -->
diff --git a/Osu.Performance.ROsu/.cargo/config.toml b/Osu.Performance.ROsu/.cargo/config.toml
new file mode 100644
index 0000000..ddcec02
--- /dev/null
+++ b/Osu.Performance.ROsu/.cargo/config.toml
@@ -0,0 +1,3 @@
+[build]
+# osu! is a 32 bit process and we only support windows
+target = "i686-pc-windows-msvc"
diff --git a/Osu.Performance.ROsu/Cargo.lock b/Osu.Performance.ROsu/Cargo.lock
new file mode 100644
index 0000000..b2f9fbb
--- /dev/null
+++ b/Osu.Performance.ROsu/Cargo.lock
@@ -0,0 +1,16 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "rosu"
+version = "0.1.0"
+dependencies = [
+ "rosu-pp",
+]
+
+[[package]]
+name = "rosu-pp"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "40f365961f000e9506345a6c57071c23ff983587f24187c0d624bf56a66c1e91"
diff --git a/Osu.Performance.ROsu/Cargo.toml b/Osu.Performance.ROsu/Cargo.toml
new file mode 100644
index 0000000..b8fb3d3
--- /dev/null
+++ b/Osu.Performance.ROsu/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "rosu"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["dylib"]
+
+[dependencies]
+rosu-pp = "0.10.0"
diff --git a/Osu.Performance.ROsu/Osu.Performance.ROsu.csproj b/Osu.Performance.ROsu/Osu.Performance.ROsu.csproj
new file mode 100644
index 0000000..855cc3e
--- /dev/null
+++ b/Osu.Performance.ROsu/Osu.Performance.ROsu.csproj
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project Sdk="Microsoft.NET.Sdk" DefaultTargets="Build">
+    <PropertyGroup>
+        <OutputType>Library</OutputType>
+        <TargetFramework>net452</TargetFramework>
+    </PropertyGroup>
+    <PropertyGroup Condition="'$(Configuration)' == 'Release'">
+        <DebugType>none</DebugType>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <CompileNative Include="src\**.rs"/>
+    </ItemGroup>
+    <PropertyGroup>
+        <NativeTarget>i686-pc-windows-msvc</NativeTarget>
+    </PropertyGroup>
+    <Target Name="BuildNative"
+            BeforeTargets="BeforeBuild"
+            Inputs="@(CompileNative);cargo.toml;cargo.lock"
+            Outputs=".\target\$(NativeTarget)\$(Configuration.ToLower())\rosu.dll">
+        <Exec Command="cargo build --color=never --message-format=human --target $(NativeTarget)" Condition="'$(Configuration)' == 'Debug'"/>
+        <Exec Command="cargo build --color=never --message-format=human --target $(NativeTarget) --release" Condition="'$(Configuration)' == 'Release'"/>
+        <ItemGroup>
+            <ROsuOutput Include=".\target\$(NativeTarget)\$(Configuration.ToLower())\rosu.dll"/>
+            <ROsuOutput Include=".\target\$(NativeTarget)\$(Configuration.ToLower())\rosu.pdb" Condition="'$(Configuration)' == 'Debug'"/>
+            <Content Include="@(ROsuOutput)">
+                <TargetPath>%(Filename)%(Extension)</TargetPath>
+                <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+            </Content>
+        </ItemGroup>
+    </Target>
+</Project>
diff --git a/Osu.Performance.ROsu/Test.cs b/Osu.Performance.ROsu/Test.cs
new file mode 100644
index 0000000..df5af63
--- /dev/null
+++ b/Osu.Performance.ROsu/Test.cs
@@ -0,0 +1,11 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace Osu.Performance.ROsu
+{
+    public class Test
+    {
+        [DllImport("rosu.dll")]
+        public static extern int test();
+    }
+}
\ No newline at end of file
diff --git a/Osu.Performance.ROsu/src/lib.rs b/Osu.Performance.ROsu/src/lib.rs
new file mode 100644
index 0000000..aa33412
--- /dev/null
+++ b/Osu.Performance.ROsu/src/lib.rs
@@ -0,0 +1,56 @@
+use rosu_pp::{Beatmap, OsuPP};
+use rosu_pp::osu::OsuDifficultyAttributes;
+
+#[repr(C)]
+struct _OsuDifficultyAttributes {
+    aim: f64,
+    speed: f64,
+    flashlight: f64,
+    slider_factor: f64,
+    speed_note_count: f64,
+    ar: f64,
+    od: f64,
+    hp: f64,
+    circles: usize,
+    sliders: usize,
+    spinners: usize,
+    stars: f64,
+    max_combo: usize,
+}
+
+impl From<&_OsuDifficultyAttributes> for OsuDifficultyAttributes {
+    fn from(value: &_OsuDifficultyAttributes) -> Self {
+        OsuDifficultyAttributes {
+            aim: value.aim,
+            speed: value.speed,
+            flashlight: value.flashlight,
+            slider_factor: value.slider_factor,
+            speed_note_count: value.speed_note_count,
+            ar: value.ar,
+            od: value.od,
+            hp: value.hp,
+            n_circles: value.circles,
+            n_sliders: value.sliders,
+            n_spinners: value.spinners,
+            stars: value.stars,
+            max_combo: value.max_combo,
+        }
+    }
+}
+
+#[no_mangle]
+extern "C" fn test() -> i32 {
+    727
+}
+
+#[no_mangle]
+extern "C" fn calculate_osu(difficulty: &_OsuDifficultyAttributes) -> f64 {
+    let diff: OsuDifficultyAttributes = difficulty.into();
+
+    return OsuPP::new(&Beatmap::default())
+        // https://github.com/MaxOhn/rosu-pp/issues/28#issuecomment-1871814571
+        .passed_objects(diff.n_circles + diff.n_sliders + diff.n_spinners)
+        .attributes(diff)
+        .calculate()
+        .pp();
+}
diff --git a/Osu.Performance/Osu.Performance.csproj b/Osu.Performance/Osu.Performance.csproj
new file mode 100644
index 0000000..712a463
--- /dev/null
+++ b/Osu.Performance/Osu.Performance.csproj
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project Sdk="Microsoft.NET.Sdk" DefaultTargets="Build">
+    <PropertyGroup>
+        <OutputType>Library</OutputType>
+        <RootNamespace>Osu.Performance</RootNamespace>
+        <AssemblyName>osu!.performance</AssemblyName>
+        <TargetFramework>net452</TargetFramework>
+        <LangVersion>12</LangVersion>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+    <PropertyGroup Condition="'$(Configuration)' == 'Debug'">
+        <DebugSymbols>true</DebugSymbols>
+        <DebugType>full</DebugType>
+        <Optimize>false</Optimize>
+        <DefineConstants>DEBUG;TRACE</DefineConstants>
+        <ErrorReport>prompt</ErrorReport>
+        <WarningLevel>4</WarningLevel>
+    </PropertyGroup>
+    <PropertyGroup Condition="'$(Configuration)' == 'Release'">
+        <DebugType>none</DebugType>
+        <Optimize>true</Optimize>
+        <DefineConstants>TRACE</DefineConstants>
+        <ErrorReport>prompt</ErrorReport>
+        <WarningLevel>4</WarningLevel>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="JetBrains.Annotations" Version="2023.3.0" PrivateAssets="all"/>
+        <ProjectReference Include="../Osu.Performance.ROsu/Osu.Performance.ROsu.csproj">
+            <SetTargetFramework>TargetFramework=net452</SetTargetFramework>
+        </ProjectReference>
+    </ItemGroup>
+</Project>
diff --git a/osu-patcher.sln b/osu-patcher.sln
index 00b8eaf..e5aaade 100644
--- a/osu-patcher.sln
+++ b/osu-patcher.sln
@@ -7,6 +7,10 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Osu.Stubs", "Osu.Stubs\Osu.
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Osu.Utils", "Osu.Utils\Osu.Utils.csproj", "{9FA3B15D-8421-4E04-BA84-85331845A01D}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Osu.Performance", "Osu.Performance\Osu.Performance.csproj", "{79B81600-142A-4DF7-B1B1-09D18ABE4537}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Osu.Performance.ROsu", "Osu.Performance.ROsu\Osu.Performance.ROsu.csproj", "{E97D5D8F-81D5-4E37-8BE8-5B1DCEDE9A14}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|x86 = Debug|x86
@@ -29,5 +33,13 @@ Global
 		{9FA3B15D-8421-4E04-BA84-85331845A01D}.Debug|x86.Build.0 = Debug|Any CPU
 		{9FA3B15D-8421-4E04-BA84-85331845A01D}.Release|x86.ActiveCfg = Release|Any CPU
 		{9FA3B15D-8421-4E04-BA84-85331845A01D}.Release|x86.Build.0 = Release|Any CPU
+		{79B81600-142A-4DF7-B1B1-09D18ABE4537}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{79B81600-142A-4DF7-B1B1-09D18ABE4537}.Debug|x86.Build.0 = Debug|Any CPU
+		{79B81600-142A-4DF7-B1B1-09D18ABE4537}.Release|x86.ActiveCfg = Release|Any CPU
+		{79B81600-142A-4DF7-B1B1-09D18ABE4537}.Release|x86.Build.0 = Release|Any CPU
+		{E97D5D8F-81D5-4E37-8BE8-5B1DCEDE9A14}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{E97D5D8F-81D5-4E37-8BE8-5B1DCEDE9A14}.Debug|x86.Build.0 = Debug|Any CPU
+		{E97D5D8F-81D5-4E37-8BE8-5B1DCEDE9A14}.Release|x86.ActiveCfg = Release|Any CPU
+		{E97D5D8F-81D5-4E37-8BE8-5B1DCEDE9A14}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal